First of all, of course drug companies have their own agenda! They are in the business to sell their drugs and to make $; it is naive to think differently, and even more so to expect them to somehow be altruistic when the rest of the business world is not.

alexandar_k your understanding of the thought process that goes into prescribing meds is way off base and shows little understanding of the medical model, clinical medicine in general, and how people come to choose one med over another med or over another therapy. I have to say that I have never met a doctor who prescribes meds by reading a journal article, or even a set of articles and then says, "okay they said it works so I am giving you this, take it regardless of side-effects and regardless of whether you want to or not". Decision making for meds is a multilayered experience. The most important aspect is prior experience with a certain med, then comes the myriad of medical issues, genetic issues, and psycho-social issues that need to be considered, and lastly is research base.
Why would I give Remeron to one patient and Effexor to another? Both work on serotonin and NE in a predictable way? Any thoughts? I can guarantee the answer, and the answer for every other doc has nothing to do with double-blind studies, drug company advertising, free pens or meals or any of the things you mentioned.